5.
What is Video?Video is electronically captured and disseminated sequential still images (frames) in rapid enough succession to create the illusion of motion, stored either analog or digitally, and synchronized with sound.

6.
What is Video?Video is electronically captured and disseminated sequential still images (frames) in rapid enough succession to create the illusion of motion, stored either analog or digitally, and synchronized with sound.

7.
Analog• A wave is recorded or used in its original form• Light or sound are converted to a fluctuating electrical wave that is directly recorded, usually to a magnetic tape medium, mirroring the original stimulus.• It produces an electrical copy of an original stimulus.• Analog signal fluctuates exactly like the original stimulus.• Analog signal is continuous.

8.
Digital• The analog wave is sampled at some interval, and then turned into numbers that are stored in the digital device• Light and sound are recorded not as an identical copy of the original stimulus, but as discrete on-and-off pulses, zeros and ones, binary digits.• It is a representation rather than a copy.• Discontinuous. Signal is sampled.• Advantage: Resists data distortion and error in duplication. No generational loss.• Advantage: Allows for manipulation of sound and image.

16.
What is Video?Video is electronically captured and disseminated sequential still images (frames) in rapid enough succession to create the illusion of motion, stored either analog or digitally, and synchronized with sound.

17.
Sequential Still Images (Frames)• The individual pictures that make up video are “frames.”

18.
Sequential Still Images (Frames)• The individual pictures that make up video are “frames.”• The frames are comprised of millions of electrically excitable “pixels” (picture elements)

19.
Pixels• The individual pictures that make up video are “frames.”• The frames are comprised of millions of electrically excitable “pixels” (picture elements)• For color, each pixel is comprised of three parts (red, blue, green)

23.
Sequential Still Images (Frames)• The individual pictures that make up video are “frames.”• The frames are comprised of millions of electrically excitable “pixels” (picture elements)• For color, each pixel is comprised of three dots (red, blue, green)• Individual images are drawn by scanning along these pixels from left to right, top to bottom.

24.
Scanning High speed video showing the fluorescent screen of CRT television being scanned by electron gun.http://youtu.be/zVS6QewZsi4

44.
What is Video?Video is electronically captured and disseminated sequential still images (frames) in rapid enough succession to create the illusion of motion, stored either analog or digitally, and synchronized with sound.

45.
Frame Rates(frames per second) Shutter Speed(fraction of a second)

46.
Frame RatesThe number of frames captured in a second (frames per second) Shutter Speed -The time light is allowed to strike the image sensor to create a single image. (fraction of a second)

47.
Frame Rates (frames per second)Higher frame capture and playback rates result in more information and higher picture quality with increasedsharpness, less stutter and flicker, and less motion blur.

51.
Frame Rates (frames per second) Impact on Video SpeedWhen video is played back at the same frame rate as it was captured, motion appears normal. When video capture speed is faster than it is played back, slow motion results, since the video is playing back at a SLOWER speed than it was captured. 30fps Capture - 30fps Playback: Normal Motion 60fps Capture - 60fps Playback: Normal Motion 60fps Capture - 30fps Playback: Slow Motion 300fps Capture - 30fps Playback: Slow Motion

52.
Frame Rates (frames per second) Impact on Video SpeedWhen video is played back at the same frame rate as it was captured, motion appears normal. When video capture speed is slower than it is playedback, fast motion results, since the video is playing back at a FASTER speed than it was captured. 30fps Capture - 30fps Playback: Normal Motion 60fps Capture - 60fps Playback: Normal Motion 30fps Capture - 60fps Playback: Fast Motion 3fps Capture - 30fps Playback: Fast Motion

53.
Frame Rates (frames per second) Impact on Video SpeedWhen video is played back at the same frame rate as it was captured, motion appears normal. When video playback speed is altered in post production to a slower frame rate than it wascaptured, slow motion results, since the video is playing back at a SLOWER speed than it was captured. 30fps Capture - 30fps Playback: Normal Motion 60fps Capture - 60fps Playback: Normal Motion60fps Capture -30fps (or 50%) Playback: Slow Motion 60fps Capture - 6fps (10%) Playback: Slow Motion

54.
Frame Rates (frames per second) Impact on Video Speed When video is played back at the same frame rate as it was captured, motion appears normal.When video playback speed is altered in post production to a fasterframe rate than it was captured, fast motion results, since the video is playing back at a FASTER speed than it was captured. 30fps Capture - 30fps Playback: Normal Motion 60fps Capture -60fps Playback: Normal Motion 60fps Capture -120fps (or 200%) Playback: Fast Motion 60fps Capture - 600fps (1000%) Playback: FAST Motion

57.
Shutter Speed (fraction of a second) Generally, shutter speed must be at least half of theframe rate. At 30 frames per second, the shutter speed will be approximately 1/60th of a second. It can be faster is the camera allows. A higher frame rate requires a faster shutter speed. Shutter speed can be increased independent of the frame rate. A faster the shutter speed results in diminished blur A slower shutter speed results in added blur.

66.
What is Video?Video is electronically captured and disseminated sequential still images (frames) in rapid enough succession to create the illusion of motion, stored either analog or digitally, and synchronized with sound.